Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"dau len tang snippets" » "dau le tang snippets", "dau nen tang snippets", "dau lan tang snippets", "dam len tang snippets", "dau tien tang snippets", "dau luan tang snippets", "dau len tang slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("dau len tang snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau len tang snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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